CN104063624A - Bolt-spacer-flange connecting and sealing safety evaluating system - Google Patents
Bolt-spacer-flange connecting and sealing safety evaluating system Download PDFInfo
- Publication number
- CN104063624A CN104063624A CN201410327868.2A CN201410327868A CN104063624A CN 104063624 A CN104063624 A CN 104063624A CN 201410327868 A CN201410327868 A CN 201410327868A CN 104063624 A CN104063624 A CN 104063624A
- Authority
- CN
- China
- Prior art keywords
- bolt
- flange
- pad
- spacer
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention provides a bolt-spacer-flange connecting and sealing safety evaluating system. The bolt-spacer-flange connecting and sealing safety evaluating system is characterized by comprising a data processing module, a data calculating module, a safety evaluating module and a spacer selecting module; the data processing module is used for processing tested basic data about a bolt, a spacer and a flange to establish a relationship model among the bolt, the spacer and the flange; the data calculating module is used for calculating the system leakage rate on the basis of the relationship model obtained by the data processing module among the bolt, the spacer and the flange; the safety evaluating module is used for comparing the leakage rate obtained by the data calculating module with a safety performance level preset by the system to obtain a system leakage rate level; the spacer selecting module is used for selecting the spacer needed by the system on the basis of the system leakage rate level obtained by the flange safety evaluating module. According to the safety evaluating system, safety management of a bolt-spacer-flange connecting system can be improved.
Description
Technical field
The present invention relates to a kind of safety estimation system, relate in particular to a kind of spacer for bolt joint seal of flanges safety estimation system.
Background technology
It is a kind of static seal structure form of pressure vessel that flange connects, and it is widely applied in petrochemical unit.Flange is divided into vessel flange and pipe flange.Vessel flange is widely used as important connecting elements, and requires it to have enough intensity and reliable sealing property.Its sealing property depends on the compatibility of deformation relation of bolt, pad and flange.Because many pipelines and container are to move under high temperature and high pressure condition for a long time, and temperature has very large impact to each member of Flanged Connection System, joint seal of flanges performance issue under high temperature is the coupled problem of temperature field and structure field, temperature can cause each member expanding with heat and contract with cold in various degree, compatibility of deformation Relationship Comparison complexity, be difficult to obtain accurately the compatibility of deformation relation between bolt, pad and flange, thereby can not effectively assess the security performance of spacer for bolt joint seal of flanges.
Summary of the invention
The object of the present invention is to provide a kind of slip rank of carrying out decision-making system according to the system leak rate of calculating, thereby reasonably select pad according to slip rank, to guarantee the spacer for bolt joint seal of flanges safety estimation system of high security of spacer for bolt joint seal of flanges.
The technical solution used in the present invention is as follows:
A kind of spacer for bolt joint seal of flanges safety estimation system, comprising:
Data processing module, the basic data about bolt, pad and flange that test is obtained is processed, to set up the relational model between described bolt, described pad and described flange;
Data computation module, the relational model between the described bolt obtaining based on described data processing module, described pad and described flange, the system leak rate of calculating spacer for bolt Flanged Connection System;
Safety evaluation module, the slip numerical value that described data computation module is obtained and the security performance grade of systemic presupposition compare, and obtain system leak rate rank;
Pad is selected module, the system leak rate rank obtaining based on described flange safe evaluation module, the pad that selective system is required.
Preferably, also comprise failure analysis module, it is by the one-piece construction being made up of bolt, pad and flange being carried out to stress field calculation and temperature field is calculated, thereby system is carried out to failure analysis.
Preferably, the security performance grade of described systemic presupposition comprises rank I, rank II and rank III, wherein when the slip of described system in scope (b, a] time, be rank I; When described system leak rate in scope (c, b] time, be rank II; When the slip of described system in scope (∞, c] time, be rank III,
Wherein a>b>c, and they for equal difference be 10
-2arithmetic progression.
Preferably, described a is 2.0 × 10
-2, described b is 2.0 × 10
-4, described c is 2.0 × 10
-6.
Preferably, described pad is selected the rank of module based on described system leak rate, selects the flange of different types, and then selects pad according to selected flange pattern.
Preferably, system is carried out to failure analysis to be comprised: described failure analysis module, according to the material property data of described bolt, described pad and described flange and structural behaviour data, is carried out stress field calculation to the one-piece construction being made up of described bolt, pad and flange; Described failure analysis module, according to the internal surface temperature of described bolt, described pad and described flange, hull-skin temperature and convection transfer rate, is carried out temperature field calculating to the one-piece construction being made up of described bolt, pad and flange; And the result of calculating based on described stress field calculation and temperature field, simulation system inefficacy computation model, obtains thrashing analysis result.
The basic data of bolt, pad and flange that first spacer for bolt joint seal of flanges safety estimation system of the present invention obtains according to test is carried out the slip of computing system, the slip of calculating and default security performance grade are compared, to obtain slip rank, thereby reasonably select pad according to slip rank, can effectively assess the sealingly secure of system, and can effectively avoid seal leakage problem.In addition, also system is carried out to failure analysis, avoid the potential pipe safety problem that causes due to long-term running, avoid unnecessary economic loss.
Brief description of the drawings
Fig. 1 is the structural representation of spacer for bolt joint seal of flanges safety estimation system of the present invention.
Fig. 2 is the security performance rank estimation flow schematic diagram of spacer for bolt joint seal of flanges safety estimation system of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of spacer for bolt joint seal of flanges safety estimation system of the present invention.
As shown in Figure 1, spacer for bolt joint seal of flanges safety estimation system of the present invention comprises data processing module 1, data computation module 2, safety evaluation module 3, pad selection module 4 and failure analysis module 5.
Wherein, data processing module 1 is processed for the basic data about bolt, pad and flange that test is obtained, to set up the relational model between bolt, pad and flange.Particularly, can test decrement data, kinetic viscosity data, the stress data of bolt, pad and the flange of acquisition respectively by material constitutive equation processes, to obtain being related to K1, K2, K3 between the decrement of bolt, pad and flange and stress, and be related to K4 between the pad unrelieved stress, pressure, temperature and the slip that obtain by the impermeability test of pad.Then set up compatibility of deformation equation by be related to K1, K2, K3 and the K4 that obtain.About the foundation of compatibility of deformation equation, can adopt the correlation technique of prior art to set up.
Then, the relational model (compatibility of deformation equation) between the described bolt that data computation module 2 obtains based on data processing module 1, described pad and described flange, the system leak rate of calculating spacer for bolt Flanged Connection System.Certainly, also can obtain system leak rate by the finite element analysis of flange.
Then the slip numerical value that safety evaluation module 3 obtains data computation module 2 and the security performance grade of systemic presupposition compare, and obtain system leak rate rank.The security performance grade of systemic presupposition comprises rank I, rank II and rank III, wherein when the slip of system in scope (b, a] time, be rank I, belong to the tight ness rating rank of economy, standard; When system leak rate in scope (c, b] time, be rank II, belong to standard, tight ness rating rank closely; When the slip of system in scope (∞, c] time, be rank III, belong to closely, tightly, extremely close tight ness rating rank, wherein a>b>c, and they for equal difference be 10
-2arithmetic progression.The result of calculating according to practical experience, a is 2.0 × 10
-2, b is 2.0 × 10
-4, c is 2.0 × 10
-6.Concrete rate the process as shown in Figure 2.
As shown in Figure 2, first in safety evaluation module 3, input the basic data such as size and material parameter of pad pretension stress, on-stream pressure, operating temperature, spacer bolt and flange, gasket compression amount, bolt load, flange moment of flexure while then calculating pretension; Then calculate the elasticity coefficient of bolt and flange under operating temperature, the decrement of setting operation operating mode lower gasket, remaining snap-in force, bolt load and the flange moment of flexure etc. of calculating operation operating mode lower gasket; Obtain the compatibility of deformation equation about bolt, pad and flange according to above deal with data, and according to compatibility of deformation equation computing system slip, obtain result of calculation≤ε; Then calculate the slip of bolt flange connected system based on result of calculation, if slip≤maximum allows slip, export evaluation result.In addition, can in computation process, adjust decrement according to result of calculation.The security performance rank of finally carrying out assessment system according to evaluation result, obtains system leak rate rank.
Then, the system leak rate rank that pad selects module 4 to obtain based on safety evaluation module 3, the pad that selective system is required.According to flange material, nominal pressure and nominal diameter, obtain the size of type of attachment, sealing surface form and the flange of flange, pad is selected the type selecting result of module 4 based on flange and different system leak rate Grade I, II and III, further selects pad.Particularly, can determine flange material according to the working pressure of system, working temperature and medium, then select flange type of attachment and sealing surface form according to nominal pressure and nominal diameter, obtain flange size.Then select kind and the material of pad according to blue type of attachment and sealing surface form, and then obtain concrete pattern and the size of pad, and select bolt and nut material, pattern and size according to flange size and shim size.
In addition, the present invention also comprises failure analysis module 5, and it is by the one-piece construction being made up of bolt, pad and flange being carried out to stress field calculation and temperature field is calculated, thereby system is carried out to failure analysis.Particularly, failure analysis module 5, according to the material property data of bolt, pad and flange and structural behaviour data, is carried out stress field calculation to the one-piece construction being made up of bolt, pad and flange; Then according to the internal surface temperature of bolt, pad and flange, hull-skin temperature and convection transfer rate, the one-piece construction being made up of bolt, pad and flange is carried out to temperature field calculating; And the result of calculating based on stress field calculation and temperature field, simulation system inefficacy computation model, obtains thrashing analysis result.
Finally it should be noted that: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, those of ordinary skill in the art is to be understood that, still can modify and be equal to replacement technical scheme of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. a spacer for bolt joint seal of flanges safety estimation system, is characterized in that, comprising:
Data processing module, the basic data about bolt, pad and flange that test is obtained is processed, to set up the relational model between described bolt, described pad and described flange;
Data computation module, the relational model between the described bolt obtaining based on described data processing module, described pad and described flange, the system leak rate of calculating spacer for bolt Flanged Connection System;
Safety evaluation module, the slip numerical value that described data computation module is obtained and the security performance grade of systemic presupposition compare, and obtain system leak rate rank;
Pad is selected module, the system leak rate rank obtaining based on described flange safe evaluation module, the pad that selective system is required.
2. spacer for bolt joint seal of flanges safety estimation system according to claim 1, it is characterized in that, also comprise failure analysis module, it is by the one-piece construction being made up of bolt, pad and flange being carried out to stress field calculation and temperature field is calculated, thereby system is carried out to failure analysis.
3. spacer for bolt joint seal of flanges safety estimation system according to claim 1 and 2, it is characterized in that, the security performance grade of described systemic presupposition comprises rank I, rank II and rank III, wherein works as the slip of described system in scope (b, a] time, be rank I; When described system leak rate in scope (c, b] time, be rank II; When the slip of described system in scope (∞, c] time, be rank III,
Wherein a>b>c, and they for equal difference be 10
-2arithmetic progression.
4. spacer for bolt joint seal of flanges safety estimation system according to claim 3, is characterized in that, described a is 2.0 × 10
-2, described b is 2.0 × 10
-4, described c is 2.0 × 10
-6.
5. spacer for bolt joint seal of flanges safety estimation system according to claim 3, is characterized in that,
Described pad is selected the rank of module based on described system leak rate, selects the flange of different types, and then selects pad according to selected flange pattern.
6. spacer for bolt joint seal of flanges safety estimation system according to claim 3, is characterized in that, system is carried out to failure analysis and comprise:
Described failure analysis module, according to the material property data of described bolt, described pad and described flange and structural behaviour data, is carried out stress field calculation to the one-piece construction being made up of described bolt, pad and flange;
Described failure analysis module, according to the internal surface temperature of described bolt, described pad and described flange, hull-skin temperature and convection transfer rate, is carried out temperature field calculating to the one-piece construction being made up of described bolt, pad and flange; And
Based on the result of described stress field calculation and temperature field calculating, simulation system inefficacy computation model, obtains thrashing analysis result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410327868.2A CN104063624A (en) | 2014-07-10 | 2014-07-10 | Bolt-spacer-flange connecting and sealing safety evaluating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410327868.2A CN104063624A (en) | 2014-07-10 | 2014-07-10 | Bolt-spacer-flange connecting and sealing safety evaluating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104063624A true CN104063624A (en) | 2014-09-24 |
Family
ID=51551334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410327868.2A Pending CN104063624A (en) | 2014-07-10 | 2014-07-10 | Bolt-spacer-flange connecting and sealing safety evaluating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104063624A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069211A (en) * | 2015-07-29 | 2015-11-18 | 武汉工程大学 | Disc spring application method in high-temperature flange connection system |
| CN105909892A (en) * | 2016-05-05 | 2016-08-31 | 武汉工程大学 | Flange joint pretightening force design method based on compression springback characteristic of gasket |
| CN113221239A (en) * | 2021-04-27 | 2021-08-06 | 江南造船(集团)有限责任公司 | Arrangement method, system, medium and electronic equipment of marine flange and gasket |
| CN116796652A (en) * | 2023-08-25 | 2023-09-22 | 国网浙江省电力有限公司电力科学研究院 | Prediction method for deterioration failure of sealing rubber gasket of distribution transformer in damp and hot area |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519674A (en) * | 2011-11-28 | 2012-06-27 | 常州大学 | Prediction method of leakage rate of bolted flange connection structure |
| CN102819634A (en) * | 2012-08-01 | 2012-12-12 | 华东理工大学 | Bolt gasket flange connection design expert system |
-
2014
- 2014-07-10 CN CN201410327868.2A patent/CN104063624A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519674A (en) * | 2011-11-28 | 2012-06-27 | 常州大学 | Prediction method of leakage rate of bolted flange connection structure |
| CN102819634A (en) * | 2012-08-01 | 2012-12-12 | 华东理工大学 | Bolt gasket flange connection design expert system |
Non-Patent Citations (1)
| Title |
|---|
| 陆晓峰等: "高温法兰连接系统的安全评定方法", 《润滑与密封》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069211A (en) * | 2015-07-29 | 2015-11-18 | 武汉工程大学 | Disc spring application method in high-temperature flange connection system |
| CN105069211B (en) * | 2015-07-29 | 2018-12-14 | 武汉工程大学 | A kind of disc spring application method in Flanged Joints at Elevated Temperature |
| CN105909892A (en) * | 2016-05-05 | 2016-08-31 | 武汉工程大学 | Flange joint pretightening force design method based on compression springback characteristic of gasket |
| CN105909892B (en) * | 2016-05-05 | 2018-06-08 | 武汉工程大学 | A kind of bump joint Prestress design method based on gasket compression rebound characteristics |
| CN113221239A (en) * | 2021-04-27 | 2021-08-06 | 江南造船(集团)有限责任公司 | Arrangement method, system, medium and electronic equipment of marine flange and gasket |
| CN113221239B (en) * | 2021-04-27 | 2022-11-18 | 江南造船(集团)有限责任公司 | Arrangement method, system, medium and electronic equipment of marine flange and gasket |
| CN116796652A (en) * | 2023-08-25 | 2023-09-22 | 国网浙江省电力有限公司电力科学研究院 | Prediction method for deterioration failure of sealing rubber gasket of distribution transformer in damp and hot area |
| CN116796652B (en) * | 2023-08-25 | 2023-12-26 | 国网浙江省电力有限公司电力科学研究院 | Prediction method for deterioration failure of sealing rubber gasket of distribution transformer in damp and hot area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104063624A (en) | Bolt-spacer-flange connecting and sealing safety evaluating system | |
| Haruyama et al. | Influence of surface roughness on leakage of new metal gasket | |
| CN108104796B (en) | Gas channeling simulation test device and test method | |
| CN104392070A (en) | Pipeline valve safety assessment method based on limit external load calculation | |
| CN102519674A (en) | Prediction method of leakage rate of bolted flange connection structure | |
| CN105184395A (en) | Initial parameter determination method for thermal power generating unit comprising afterheat utilizing system | |
| CN102279079A (en) | Method for inspecting performance of sealing gasket for nuclear power equipment | |
| CN108507890A (en) | A kind of pressure vessel and piping corrosion fatigue testing system and test method | |
| CN107122563A (en) | A kind of GIS hermetic seals rubber life prediction computational methods and device | |
| CN106499893A (en) | A kind of multiple-sealed flange with leakage monitoring function | |
| CN106980734B (en) | RPV sealing performance calculation method considering material and contact nonlinearity | |
| CN204314001U (en) | Pipe flange stress monitoring system under Moments effect | |
| CN110816209B (en) | Air conditioning system filling parameter obtaining method and device | |
| CN205503265U (en) | Car expansion tank and pressure measuring equipment thereof | |
| CN110929433B (en) | Fatigue damage analysis and service life calculation method for well control device | |
| FR3114648B1 (en) | Leak characterization process | |
| CN113591272B (en) | Complex pipeline structure fatigue damage assessment method and system based on prestress correction | |
| CN104070596B (en) | A kind of superhigh temperature hardened oilwell cement curing autoclave and using method thereof | |
| Huang | Closure to “Skeletonizing Pipes in Series within Urban Water Distribution Systems Using a Transient-Based Method” by Yuan Huang, Feifei Zheng, Huan-Feng Duan, Tuqiao Zhang, Xinlei Guo, and Qingzhou Zhang | |
| CN110617959A (en) | Detection apparatus for simulation deep sea environment reciprocating motion sealing washer sealing performance | |
| CN109583126B (en) | Time-dependent high-temperature bolt flange joint leakage rate prediction method | |
| CN109446554A (en) | A kind of Selection and Design and assay method of HDPE piping flanged joint | |
| Muhammad et al. | Hydraulic transient analysis in fluid pipeline: A review | |
| CN106404245B (en) | A kind of flared type combined catheter cap nut mounting torque determines method | |
| CN102279080B (en) | Performance test device for sealing gasket of nuclear power equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140924 |